RESEARCH IN NUCLEAR AND RADIOCHEMISTRY. Annual Progress Report for Year Ending January 31, 1964
Technical Report
·
OSTI ID:4085581
High-energy reaction results are presented for the isomeric ratios of Te/ sup 127/ and Te/sup 129/ as formed in (p,pn) reactions and in neutron-transfer reactions with C/sup 12/ and N/sup 14/. The fission recoil ranges of fragments in 150-Mev proton fission of U/sup 238/, as determined in recent years, are discussed briefly. Continued search for the mass region in which fission in the liquid-drop sense should vanish is reported. A model is proposed to explain reactions which are characterized by neither single-particle excitation nor compound-nucleus formation but rather by some intermediate form of excitation, In compound-nuclear reaction studies, isomeric cross-section ratios of Ce/sup 137/, formed by the reactions La/sup 139/(p,3n), Ba/sup 136/( alpha ,3n), and Te/sup 128/ (C/sup 12/,3n) , are reported. A theoretical treatment for isomeric ratios in alpha particle-induced reactions is presented in which the effect of competing evaporation paths is explicitly taken into account. The moments of inertia deduced are invariably less than the rigid-body value. A revised model is proposed in which the level density is taken to be zero for spins above a certain maximum value which is determined by a Fermi gas model. (auth)
- Research Organization:
- Clark Univ., Worcester, Mass.
- NSA Number:
- NSA-18-013839
- OSTI ID:
- 4085581
- Report Number(s):
- TID-20201
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALPHA BEAMS
ALPHA PARTICLES
ATOMIC MODELS
BARIUM 136
CARBON 12
CERIUM 137
CHEMISTRY
CROSS SECTIONS
DIAGRAMS
ENERGY
ENERGY LEVELS
ENERGY RANGE
EXCITATION
FERMI GAS MODEL
FISSION
FISSION PRODUCTS
GASES
INTERACTIONS
ION BEAMS
IRRADIATION
ISOTOPES
LANTHANUM 139
MATHEMATICS
MECHANICS
MOMENT OF INERTIA
MOMENTUM
NEUTRONS
NITROGEN 14
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARTICLE TRACKS
PARTICLES
PROTON BEAMS
PROTONS
QUANTITY RATIO
QUANTUM MECHANICS
RADIATIONS
RADIOISOTOPES
RECOILS
SPIN
TABLES
TELLURIUM 127
TELLURIUM 128
TELLURIUM 129
TRANSPORT THEORY
URANIUM 238
WEIGHT
ALPHA PARTICLES
ATOMIC MODELS
BARIUM 136
CARBON 12
CERIUM 137
CHEMISTRY
CROSS SECTIONS
DIAGRAMS
ENERGY
ENERGY LEVELS
ENERGY RANGE
EXCITATION
FERMI GAS MODEL
FISSION
FISSION PRODUCTS
GASES
INTERACTIONS
ION BEAMS
IRRADIATION
ISOTOPES
LANTHANUM 139
MATHEMATICS
MECHANICS
MOMENT OF INERTIA
MOMENTUM
NEUTRONS
NITROGEN 14
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARTICLE TRACKS
PARTICLES
PROTON BEAMS
PROTONS
QUANTITY RATIO
QUANTUM MECHANICS
RADIATIONS
RADIOISOTOPES
RECOILS
SPIN
TABLES
TELLURIUM 127
TELLURIUM 128
TELLURIUM 129
TRANSPORT THEORY
URANIUM 238
WEIGHT